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  <h1>Source code for cup.net.asyn.common</h1><div class="highlight"><pre>
<span></span><span class="ch">#!/usr/bin/env python</span>
<span class="c1"># -*- coding: utf-8 -*</span>
<span class="c1"># Copyright: [CUP] - See LICENSE for details.</span>
<span class="c1"># Authors: Guannan Ma (@mythmgn),</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="sd">common function module for cup.net.asyn</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">import</span> <span class="nn">socket</span>
<span class="kn">import</span> <span class="nn">struct</span>

<span class="kn">from</span> <span class="nn">cup.util</span> <span class="kn">import</span> <span class="n">misc</span>


<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span>
    <span class="s1">&#39;ip_port2connaddr&#39;</span><span class="p">,</span> <span class="s1">&#39;add_stub2connaddr&#39;</span><span class="p">,</span> <span class="s1">&#39;add_future2connaddr&#39;</span><span class="p">,</span>
    <span class="s1">&#39;get_ip_and_port_connaddr&#39;</span><span class="p">,</span> <span class="s1">&#39;getip_connaddr&#39;</span><span class="p">,</span> <span class="s1">&#39;getport_connaddr&#39;</span><span class="p">,</span>
    <span class="s1">&#39;getstub_connaddr&#39;</span><span class="p">,</span> <span class="s1">&#39;getfuture_connaddr&#39;</span>
<span class="p">]</span>


<div class="viewcode-block" id="ip_port2connaddr"><a class="viewcode-back" href="../../../../cup.net.asyn.html#cup.net.asyn.common.ip_port2connaddr">[docs]</a><span class="k">def</span> <span class="nf">ip_port2connaddr</span><span class="p">(</span><span class="n">peer</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    connaddr is a 64bit int</span>
<span class="sd">        32 -  16    - 16   - 32</span>
<span class="sd">        ip - port   - stub - future</span>

<span class="sd">    :param peer:</span>
<span class="sd">        (ipaddr, port)</span>
<span class="sd">    :return:</span>
<span class="sd">        return a connaddr</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="n">misc</span><span class="o">.</span><span class="n">check_type</span><span class="p">(</span><span class="n">peer</span><span class="p">,</span> <span class="nb">tuple</span><span class="p">)</span>
    <span class="n">ipaddr</span><span class="p">,</span> <span class="n">port</span> <span class="o">=</span> <span class="n">peer</span>
    <span class="n">misc</span><span class="o">.</span><span class="n">check_type</span><span class="p">(</span><span class="n">ipaddr</span><span class="p">,</span> <span class="nb">str</span><span class="p">)</span>
    <span class="n">packed</span> <span class="o">=</span> <span class="n">socket</span><span class="o">.</span><span class="n">inet_aton</span><span class="p">(</span><span class="n">ipaddr</span><span class="p">)</span>
    <span class="k">return</span> <span class="p">(</span><span class="n">struct</span><span class="o">.</span><span class="n">unpack</span><span class="p">(</span><span class="s2">&quot;!L&quot;</span><span class="p">,</span> <span class="n">packed</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span> <span class="o">&lt;&lt;</span> <span class="mi">64</span><span class="p">)</span> <span class="o">|</span> <span class="p">(</span><span class="n">port</span> <span class="o">&lt;&lt;</span> <span class="mi">48</span><span class="p">)</span></div>


<div class="viewcode-block" id="add_stub2connaddr"><a class="viewcode-back" href="../../../../cup.net.asyn.html#cup.net.asyn.common.add_stub2connaddr">[docs]</a><span class="k">def</span> <span class="nf">add_stub2connaddr</span><span class="p">(</span><span class="n">pack</span><span class="p">,</span> <span class="n">stub</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    add stub into connaddr</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">return</span> <span class="n">pack</span> <span class="o">|</span> <span class="p">(</span><span class="n">stub</span> <span class="o">&lt;&lt;</span> <span class="mi">32</span><span class="p">)</span></div>


<div class="viewcode-block" id="add_future2connaddr"><a class="viewcode-back" href="../../../../cup.net.asyn.html#cup.net.asyn.common.add_future2connaddr">[docs]</a><span class="k">def</span> <span class="nf">add_future2connaddr</span><span class="p">(</span><span class="n">pack</span><span class="p">,</span> <span class="n">future</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    add future into connaddr</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">return</span> <span class="n">pack</span> <span class="o">|</span> <span class="n">future</span></div>


<div class="viewcode-block" id="get_ip_and_port_connaddr"><a class="viewcode-back" href="../../../../cup.net.asyn.html#cup.net.asyn.common.get_ip_and_port_connaddr">[docs]</a><span class="k">def</span> <span class="nf">get_ip_and_port_connaddr</span><span class="p">(</span><span class="n">pack</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    get (ip, port) from connaddr</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="n">ipaddr</span> <span class="o">=</span> <span class="n">getip_connaddr</span><span class="p">(</span><span class="n">pack</span><span class="p">)</span>
    <span class="n">port</span> <span class="o">=</span> <span class="n">getport_connaddr</span><span class="p">(</span><span class="n">pack</span><span class="p">)</span>
    <span class="k">return</span> <span class="p">(</span><span class="n">ipaddr</span><span class="p">,</span> <span class="n">port</span><span class="p">)</span></div>


<div class="viewcode-block" id="getip_connaddr"><a class="viewcode-back" href="../../../../cup.net.asyn.html#cup.net.asyn.common.getip_connaddr">[docs]</a><span class="k">def</span> <span class="nf">getip_connaddr</span><span class="p">(</span><span class="n">pack</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    get ip from connaddr</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">return</span> <span class="n">socket</span><span class="o">.</span><span class="n">inet_ntoa</span><span class="p">(</span><span class="n">struct</span><span class="o">.</span><span class="n">pack</span><span class="p">(</span><span class="s1">&#39;!L&#39;</span><span class="p">,</span> <span class="n">pack</span> <span class="o">&gt;&gt;</span> <span class="mi">64</span><span class="p">))</span></div>


<div class="viewcode-block" id="getport_connaddr"><a class="viewcode-back" href="../../../../cup.net.asyn.html#cup.net.asyn.common.getport_connaddr">[docs]</a><span class="k">def</span> <span class="nf">getport_connaddr</span><span class="p">(</span><span class="n">pack</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    get port from connaddr</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">return</span> <span class="p">(</span><span class="n">pack</span> <span class="o">&gt;&gt;</span> <span class="mi">48</span><span class="p">)</span> <span class="o">&amp;</span> <span class="mh">0xffff</span></div>


<div class="viewcode-block" id="getstub_connaddr"><a class="viewcode-back" href="../../../../cup.net.asyn.html#cup.net.asyn.common.getstub_connaddr">[docs]</a><span class="k">def</span> <span class="nf">getstub_connaddr</span><span class="p">(</span><span class="n">pack</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    get stub from connaddr</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">return</span> <span class="p">(</span><span class="n">pack</span> <span class="o">&gt;&gt;</span> <span class="mi">32</span><span class="p">)</span> <span class="o">&amp;</span> <span class="mh">0xffff</span></div>


<div class="viewcode-block" id="getfuture_connaddr"><a class="viewcode-back" href="../../../../cup.net.asyn.html#cup.net.asyn.common.getfuture_connaddr">[docs]</a><span class="k">def</span> <span class="nf">getfuture_connaddr</span><span class="p">(</span><span class="n">pack</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    get future from conaddr</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="k">return</span> <span class="p">(</span><span class="n">pack</span><span class="p">)</span> <span class="o">&amp;</span> <span class="mh">0xffff</span></div>

<span class="c1"># vi:set tw=0 ts=4 sw=4 nowrap fdm=indent</span>
</pre></div>

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